Index: wp-includes/kses.php
===================================================================
--- wp-includes/kses.php	(revision 8410)
+++ wp-includes/kses.php	(working copy)
@@ -740,6 +740,7 @@
  */
 function wp_kses_bad_protocol($string, $allowed_protocols) {
 	$string = wp_kses_no_null($string);
+	$string = str_replace("\xc3\xad", 'i', $string); # do not break í with the next replacement
 	$string = preg_replace('/\xad+/', '', $string); # deals with Opera "feature"
 	$string2 = $string.'a';